Art was good, but...
...you portrayed the Lost characters horribly. You made them all seem like a bunch of pansies (especially Jack). Plus, I don't remember Jack (Lost) ever freaking out when a difficult (or even impossible) task is set out in front of him. He always keeps his cool. Plus, Ben would have never jumped on and cried over Juliet. Plus, if all they needed to do to kill the black cloud was shoot if a few times, I'm sure the Others would have done it already.
Sorry, but the only decent thing about this movie was the graphics, and even some of that wasn't so great (I had no idea that that woman was Kate for awhile). The voices were nothing like the real voices, and the humor was very forced.